If you want to make your site as good as it can be, you need to understand how your visitors experience your site. Google Analytics can get you part of the way there, but it doesn’t give you a full picture of what visitors are actually doing on your individual pages.

(Really) Marvellous Metrics is a WordPress plugin that can help you collect all that information, and more. It’s heatmaps, form tracking, scroll tracking, and more wrapped up into one WordPress-specific plugin.